This product automatically senses hot wire-to-ground faults, and shuts off the power. It features an auto-monitoring function as well. It is convenient and works effectively. It is definitely a great quality product.

Next Generation AFCI Circuit Breakers 20AMP MFG INFO: With the electrical contractor and homeowner in mind, Eaton has revolutionized the technology and design of the Type CH Combination AFCIs. Eaton's next generation Type CH AFCI products feature superior protection and circuit diagnostics, along with exclusive features which reduce installation time and unwanted tripping.